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CAS No 481-74-3 , 1,8-dihydroxy-3-methylanthracene-9,10-dione

  • Name: 1,8-dihydroxy-3-methylanthracene-9,10-dione
  • Synonyms: Chrysophanein; 3-Methylchrysazin; CHRYSOPHANIC ACID; 481-74-3; Crysophanic acid;1,8-dihydroxy-3-methylanthracene-9,10-dione;Chrysophanol; 1,8-Dihydroxy-3-methylanthraquinone; Turkey rhubarb;
  • CAS Registry Number:
  • Melting Point: 194-198 ºC
  • Flash Point: 263.9°C
  • Boiling Point: 489.5°Cat760mmHg
  • Density: 1.476g/cm3
  • Refractive index: 1.709
  • Water Solubility: <0.1 G/100 ML AT 18 ºC
  • Safety Statements: R36/37/38
  • Hazard Symbols: Xi: Irritant;
  • Flash Point: 263.9°C
  • EINECS: 207-572-2
  • Molecular Weight: 254.2375
  • InchiKey: LQGUBLBATBMXHT-UHFFFAOYSA-N
  • InChI: InChI=1S/C15H10O4/c1-7-5-9-13(11(17)6-7)15(19)12-8(14(9)18)3-2-4-10(12)
    16/h2-6,16-17H,1H3
  • Risk Statements: S26;S37/39
  • Molecular Formula: C15H10O4
  • Molecular Structure:CAS No:481-74-3 1,8-dihydroxy-3-methylanthracene-9,10-dione

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References of 1,8-dihydroxy-3-methylanthracene-9,10-dione
Title: Chrysophanic Acid
CAS Registry Number: 481-74-3
CAS Name: 1,8-Dihydroxy-3-methyl-9,10-anthracenedione
Synonyms: 1,8-dihydroxy-3-methylanthraquinone; 3-methylchrysazin; chrysophanol
Molecular Formula: C15H10O4
Molecular Weight: 254.24
Percent Composition: C 70.86%, H 3.96%, O 25.17%
Literature References: Occurs in the free state and as glucoside in cascara sagrada, senna and various species of Rumex and Rheum (rhubarb). Isoln from rhubarb root: Tutin, Clewer, J. Chem. Soc. 99, 946 (1911); Siesto, Bartoli, Farmaco Ed. Prat. 12, 517 (1957); Carelli, Giuliano, ibid. 184; from Penicillium islandicum Sopp.: Howard, Raistrick, Biochem. J. 46, 49 (1950); from Chaetonium affine Corda: Arkley et al., Croat. Chem. Acta 29, 141 (1957), C.A. 53, 1287h (1959). Synthesis: Eder, Widmer, Helv. Chim. Acta 5, 3 (1922); 6, 419 (1923); Ayyangar et al., J. Sci. Ind. Res. 20B, 493 (1961). Total synthesis: M. E. Jung, J. A. Lowe, Chem. Commun. 1978, 95.
Properties: Hexagonal or monoclinic crystals from alcohol or benzene, mp 196°. Sublimes. Absorption max: 226, 256, 278, 288, 436 nm (e ′ 10-3 41, 28, 14, 14, 11.8). Practically insol in water. Slightly sol in cold, freely in boiling alc; sol in benzene, chloroform, ether, glacial acetic acid, acetone, solns of alkali hydrides, and in hot solns of alkali carbonates; very slightly sol in petr ether.
Melting point: mp 196°
Absorption maximum: Absorption max: 226, 256, 278, 288, 436 nm (e ′ 10-3 41, 28, 14, 14, 11.8)
 
Derivative Type: Glucoside
Synonyms: Chrysophanein; chrysophaniin
Molecular Formula: C21H20O9
Molecular Weight: 416.38
Percent Composition: C 60.58%, H 4.84%, O 34.58%
Properties: Fine yellow needles from alc, mp 248-249°. Slightly sol in hot water; sol in pyridine. Practically insol in cold water, chloroform, ether.
Melting point: mp 248-249°